add class for repeating events

apps/calendar/lib/repeat.php

@@ -0,0 +1,41 @@
+<?php
+/**
+ * Copyright (c) 2012 Georg Ehrke <ownclouddev@georgswebsite.de>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+/*
+ * This class manages the caching of repeating events
+ * Events will be cached for the current year ± 5 years
+ */
+class OC_Calendar_Repeat{
+	/*
+	 * @brief returns the cache of an event
+	 */
+	public static function get();
+	/*
+	 * @brief returns the cache of all events of a calendar
+	 */
+	public static function getcalendar();
+	/*
+	 * @brief generates the cache the first time
+	 */
+	public static function generate();
+	/*
+	 * @brief updates an event that is already cached
+	 */
+	public static function update();
+	/*
+	 * @brief checks if an event is already cached
+	 */
+	public static function is_cached();
+	/*
+	 * @brief removes the cache of an event
+	 */
+	public static function clean();
+	/*
+	 * @brief removes the cache of all events of a calendar
+	 */
+	public static function cleancalendar();
+}